UC Master Gardener Program of Contra Costa County
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1.4. Plant Selection

Vegetable Gardening - Handbook for Beginners
Chapter 1.4.

During fall and winter, plant double the amount you would during spring and summer, since plants will grow slowly and harvests will be less frequent. Plant what you and your family enjoy eating, and plant enough to meet your family’s needs. Choose disease-resistant varieties. Consider maturity dates (early or late season variety), and the size the plant gets relative to the available space. Be sure to select varieties that do well in your growing area. Also try a few new types of vegetables to perhaps discover new favorites. Some crops have short harvest periods, so you can make several successive plantings or choose several varieties to stagger harvests. Planting three weeks apart in spring results in about two weeks’ delay in harvest time.

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Beets in a raised bed garden. Photo by Kelly Clark, UCANR.
Beets in a raised bed garden. Photo by Kelly Clark, UCANR.

If some of your crops have short growing seasons, you may want to plant more of the same or different crops after harvesting the first.

Vegetables grown from seed will take 4 to 6 weeks longer to mature than those grown from transplants. If you grow your own transplants from seed, start them four to six weeks before the desired planting date.

To discourage soilborne pests, avoid planting the same crop, or crops from the same plant family, in the same place two years in a row. For example, a four-year rotation could include tomatoes, corn, legumes, and squash.

When planting perennials, locate them where they won’t be disturbed by the more frequent cultivation, harvesting, and replanting required by annual vegetables.

Plant vegetables to best utilize available space. If you have little space, use varieties that don’t become as large as others, or select varieties that can be grown vertically on trellises.

Vegetable Families
(Adapted from George Pessin -- 5/06)

Botanical FamilyCommon NameEdible Members
Alliaceae*Allium or Onion Familychives, garlic, leeks, onions, shallots
Amaranthaceae or Chenopodiaceae *Amaranth or Beet familyamaranth, beet, chard, epazote, quinoa, spinach
Apiaceae or Umbelliferae*Carrot or Dill familyangelica, anise, caraway, carrot, celery, chervil, cilantro, cumin, dill, fennel, lovage, parsley, parsnip
Asteraceae or Compositae*Aster, Daisy, or Sunflower familyartichoke, chicory, cardoon, endive, escarole, jerusalem artichoke, lettuce, radicchio, shungiku, (sunflower)
Brassicaceae or Cruciferae*Brassica, Cabbage, or Mustard familyarugula, bok choy, broccoli, brussels sprouts, cabbage, cauliflower, kale, kohlrabi, mizuna, mustard, radish, rapini, rutabaga, tat soi, turnip
CucurbitaceaeCucumber, Gourd, Melon, or Pumpkin familyPumpkin family chayote, cucumber, melon, pumpkin, squash, watermelon
Fabaceae or Leguminosae*Legume Family(beans), fava beans, lentils, peas, peanuts, and soybeans
Lamiaceae*Mint Family(basil), marjoram, mint, oregano, rosemary, sage, thyme
Poaceae or GramineaeGrass Familybamboo, barley, corn, rice, rye, sugarcane, wheat
SolanaceaeNightshade, Potato or Tomato Familyeggplant, pepper, (potato), tomato

*Cool weather crop (can be grown through the winter in California) (Italics) are contrary to the rule

Recommended Vegetable Planting Dates for California

VegetableNorth / North CoastSouth CoastInterior ValleysDesert ValleysCrop TypeAmount to plant for 4 people
Beans, snap1,2Jul; May-JunMar-AugApr-May; Jul AugJan-Mar; AugWarm Season15-25 ft. row
Beets 1,2Feb-AugJan-SepFeb-Apr, AugSep-JanCool Season10-15 ft. row
Broccoli 2,3Feb-Apr; Aug-SepJun-Jul; Jan FebDec-Feb; JulSepCool Season6-100 ft. row
Cantaloupes, Other melonsMayApr-MayApr-JunJan-Apr, JulWarm Season5-10 hills
Carrots 1,2Jan-May; Jul AugJan-SepAug-Sep; Feb-AprSep-DecCool Season10-25 ft. row
Chard 1Feb-May; AugFeb-MayFeb; AugSep-OctCool Season3-4 plants
Chives 1AprFeb-AprFeb-MarSep-FebCool Season1 clump
Corn, Sweet 2May-JulMar-JulMar-JulFeb-MarWarm Season20-30 ft.
CucumbersApr-JunApr-JunApr-JunFeb-MayWarm Season6 plants
Eggplant 1,3MayApr-MayApr-MayFeb-AprWarm Season4-6 plants
Garlic 1Oct-DecOct-DecOct-DecSep-NovCool Season10-20 ft. row
Lettuce 1,2Feb-AugAug-AprAug; Nov-MarSep-DecCool Season10-15 ft row or 5 ft row each month
OkraMayApr-MayMayMarWarm Season10-20 ft. row
Onions 1,4 (bulb)Jan-MarFeb-MarNov-MarOct-NovCool Season30-40 ft. row
Onions 1,2,3 (green)Apr-JulAll yearAug-DecSep-JanCool SeasonN/A
Peas 1,2Jan-Apr; Sep OctAug; Dec MarSep-JanSep-OctCool Season30-40 ft row
Peppers 1,3MayApr-MayMayMarWarm Season5-10 plants
Potatoes, sweet 3MayApr-MayApr-JunFeb-JunWarm Season50-100 ft. row
Potatoes, whiteEarly: Feb Late: Apr-MayFeb-May; Jun-AugFeb-Mar; AugDec-FebWarm Season50-100 ft. row
PumpkinsMayMay-JunApr-JunMar-JulWarm Season1-3 plants
Radish 1,2All yearAll yearSep-AprOct-MarCool Season4 ft. row
Spinach 1Aug-FebAug-MarSep-JanSep-NovCool Season10-20 ft. row
Squash, Summer 1May-JulApr-JunApr-JunFeb-MarWarm Season2-4 plants
Squash, Winter 1MayApr-JunApr-JunFeb-Mar; AugWarm Season2-4 plants
Tomatoes 1,3MayApr-Jul 15Apr-MayDec-MarWarm Season6-10 plants (if processing)
Turnips 1Jan; AugJan; Aug-OctFeb, AugOct-FebCool Season10-15 ft. row
WatermelonsMay-JunApr-JunApr-JunJan-MarWarm Season6 plants

Adapted from: California Master Gardener Handbook, Home Vegetable Gardening; Dennis Pittenger, editor.

Region Definitions

  • North and North Coast = Monterey County north
  • South Coast = San Luis Obispo County south
  • Interior Valleys = Sacramento, San Joaquin, and similar valleys
  • Desert Valleys = Imperial, Coachella valleys

Planting dates are only approximate, as the climate may vary even in small regions of the state. Contact your local Master Gardeners and experiment on your own to find more precise dates.

Footnotes

1. This crop is suitable for a small garden if compact varieties are grown. 

2. In a suitable climate, these crops can be planted more than once per year for a continuous harvest. 

3. Transplants may be used for planting. 

4. Onion varieties are daylight dependent. Short-day and intermediate-day varieties are autumn planted. Long-day varieties are planted in spring.


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